Still, proposals shape behavior before they become law. Agency officials may slow hiring, delay grant awards, and postpone facility upgrades while budgets remain uncertain. University researchers who depend on federal grants often describe this uncertainty itself as a cost.

Who would feel the impact first?

The earliest effects of any deep cuts would likely appear in:

• New research grants, which agencies could slow or shrink in size
• Graduate students and postdoctoral researchers, whose positions are typically paid from grants
• Long-running projects, such as clinical studies and climate monitoring, that need steady multi-year funding
• National laboratories and shared research facilities that universities cannot replace on their own

Because research careers depend on continuous funding, even temporary gaps can push scientists out of the field entirely.

How unusual is this?

Presidential budget requests routinely propose cuts that Congress later rejects, and science agencies have survived such battles before. What distinguishes this proposal, per Scientific American's framing, is its magnitude. Deep, simultaneous reductions across agencies would compound in ways that isolated cuts do not, because modern research increasingly depends on collaboration across fields and institutions.

A climate modeler, for example, may rely on satellite data from NASA, supercomputing time from the Department of Energy, and grants from the National Science Foundation simultaneously. Cutting all three at once removes every pillar at the same time.

What happens next?

The proposal now moves into the congressional budget process. House and Senate appropriations committees will hold hearings, hear from agency leaders and outside witnesses, and write their own spending bills. Those bills, not the president's request, determine actual funding levels.

Scientists and research advocates will likely use the coming months to argue that federal research spending pays economic and public-health dividends. The administration, for its part, has framed such spending as an area where savings are possible.

A note of caution: this story is developing, and the specific numbers attached to each agency had not been confirmed in the initial reporting. Figures circulating in early coverage of budget season often change as the full request reaches Congress. SciBeat will follow the details — including agency-by-agency totals — as the appropriations process unfolds.